When I get my tank back in order, I was planning on going back to some straitas. However, I recently found a good sourse of botia dario in a LFS. I was wanting to put a school of three or four botias in the tank. Would two straitas and two darios work together and school together? Or would I be better off with all of the same species? Also, how big do darios get? I've heard conflicting reports of only three inches, to as big as five or six inches?